Debate tally. Last Tuesday's second of three presidential debates drew 63.2 million viewers from commercial networks, about 11 million more than the first, which aired on a Friday, but less than the 69.9 million for the lone vice presidential debate. ABC and CNN led broadcast and cable competition respectively.

Major cast shifts are coming to CSI (CBS, 9 ET/PT), but the stars are still aligned tonight, and the result is a ninth-season premiere that does this long-running favorite proud. The prime movers are two actors who are leaving the series: William Petersen (Gil) and Gary Dourdan (Warrick).

Saturday Night Live's "strategery" for the new season is simple: an ample dose of political humor. NBC's late-night comedy sketch show launches its 34th year Saturday (11:30 ET/PT), capitalizing on what it often does best: satirizing and parodying politicians. Democratic contender Barack Obama is expected to make an appearance.